Integration and Implementation of an Advanced Measurement System into The Assembly Process in Support of NEAT" Hull Block Construction and Erection"

Dimensional control is one of the most important challenges in shipbuilding industry. In order to predict assembly dimensional variation in block construction of shipbuilding, a variation stream model based on state space is presented in this paper, which can be further applied to accuracy control. Both locating error and welding deformation are taken into consideration in this model, and variation propagation mechanisms and accumulative rule in the assembly process are analyzed, then, a model is developed to describe the variation propagation throughout the assembly process, finally, an example of flat block construction is given to provide this method is effective and useful.

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Development of a Precision Micro-Assembly Machine for ICF Targets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.605-607.1431 ◽

2012 ◽

Vol 605-607 ◽

pp. 1431-1435

Author(s):

Wen Rong Wu ◽

Da Hai Yu ◽

Lin Zhang ◽

Zu Rong Qiu ◽

Xin Han Huang

Keyword(s):

Monitoring System ◽

Measurement System ◽

Online Monitoring ◽

Mathematic Model ◽

Research Community ◽

Microscopic Image ◽

Assembly Process ◽

Micro Assembly ◽

On Line ◽

Online Monitoring System

The Precision Micro-Assembly Machine was developed to manufacture the ICF targets, which have submillimeter-sized components with micrometer sized features. The machine provides simultaneous manipulation of three objects in a 3-cm3 operating arena and can stitch together multiple millimeter-scales operating arenas over distances spanning tens of centimeters with micrometer-level accuracy. In this report, we will discuss the technologies that are merged to help assist the research community with micro-component fabrication. Furthermore, we also present the design of the online monitoring system, which contains two kinds of non-contact measurement system, microscopic image and laser confocal. The online monitoring system can characterize the positions of the target components during the assembly process. The effect and mathematic model of on-line measuring was analyzed. The results of target assembly experiments show position tolerance of the assembly is not more than 10μm.

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Rapid Response Diagnosis of Multi-stage Assembly Process with Compliant non-ideal Parts using Self-evolving Measurement System

Procedia CIRP ◽

10.1016/j.procir.2017.01.035 ◽

2017 ◽

Vol 60 ◽

pp. 38-43 ◽

Cited By ~ 11

Author(s):

Pasquale Franciosa ◽

Arnab Palit ◽

Ferdinando Vitolo ◽

Darek Ceglarek

Keyword(s):

Measurement System ◽

Rapid Response ◽

Assembly Process ◽

Multi Stage

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Snap-fit Assembly Process with Industrial Robot Including Force Feedback

Robotica ◽

10.1017/s0263574719000614 ◽

2019 ◽

Vol 38 (2) ◽

pp. 317-336

Author(s):

László Rónai ◽

Tamás Szabó

Keyword(s):

Measurement System ◽

Deformation Theory ◽

Force Feedback ◽

Industrial Robot ◽

Equilibrium Points ◽

Small Deformation ◽

Large Displacement ◽

Assembly Process ◽

Displacement Control ◽

The Stability

SummaryThis paper investigates a battery snap-in operation performed by an industrial robot. The snap-fit phenomenon is experienced during the insertion of batteries into the battery holder. In order to understand the nature of the snap-fit phenomenon, the large displacement but small deformation theory is used to model the insertion operation. The stability of equilibrium points is analysed in order to determine the so-called trip point. The purpose of the investigation is to augment the displacement control of the robot with force feedback. A microcontroller-based measurement system is implemented to provide the force feedback. The proposed method is valid for a class of snap-fit problems not only for the investigated specific one.

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